diff --git a/big_o_exercise/big_o_exercise.js b/big_o_exercise/big_o_exercise.js
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+++ b/big_o_exercise/big_o_exercise.js
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+/* Part 1
+1. O(n)
+2. O(n)
+3. O(1)
+4. O(n^3)
+5. O(n)
+6. O(log n)
+7. O(log n)
+8. O(n^2)
+9. O(1)
+10.O(n^2)
+*/
+
+/* Part 2
+1.  T: O(n)
+	S: O(1)
+2.	T: O(1)
+	S: O(1)
+3.	T: O(n)
+	S: O(1)
+4. 	T: O(n)
+	S: O(n)
+5. 	T: O(n^2)
+	S: O(n)
+*/
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